18997798

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{1723}}^1$

素因数の和:1911

約数の個数: 16

約数和(自身を含む): 29480400

約数和(自身を除く): 10482602

約数列:

[1, 2, 37, 74, 149, 298, 1723, 3446, 5513, 11026, 63751, 127502, 256727, 513454, 9498899, 18997798]

約数ペア:

[(1, 18997798), (2, 9498899), (37, 513454), (74, 256727), (149, 127502), (298, 63751), (1723, 11026), (3446, 5513)]